CN2198054Y - Upper Die Protection Device of Button Riveting Machine - Google Patents

Abstract

The invention discloses an upper die protection device for a button riveting machine, wherein the middle section of the upper die is provided with a push rod which protrudes toward the direction of the upper button flow channel and follows the upper die to move up and down; a spacing guide block is provided on the inner surface of the upper button flow channel corresponding to the push rod, and the surface of the spacing guide block is inclined from top to bottom in the direction of the push rod. The upper section is provided with a telescopic block which will be retracted into the lower section of the spacing guide block when subjected to downward pressure. When retracted into the lower section of the spacing guide block, the top inclined surface of the shrinking block will be on the same inclined surface as the inclined surface of the spacing guide block. After the upper die is closed downward, it moves upward. The thickness of the telescopic block can control the upper button flow channel to be close to the upper die again, thereby avoiding damage to the upper die.

Description

The utility model relates to a protective device for a riveting working machine, in particular to a protective device for an upper mold of a button or eyelet riveting working machine.

The structure of the riveting machine for fixing decorative buttons and eyelets (hereinafter referred to as buttons) in the prior art, please refer to Figures 1 and 2, which mainly includes:

The lower mold assembly 10 is set on the working flat plate 110 of the machine platform 11 .

An upper die set 12, which has a cylindrical upper die 120, the bottom end of the upper die 120 just corresponds to the lower die 100 up and down and can move along the upper and lower axial directions, and is inserted in a four-cornered bucket 121 with its top end.

A transmission mechanism 13 drives a rotating shaft with a power rotating wheel 130. This power rotating shaft 130 is a belt pulley driven by a flywheel. The front end of the cam 131 protrudes forward through an eccentric shaft (not shown) that can control the upper and lower movements of the upper mold through the slider. The upper button runner 143 on the side moves to control the distance between the bottom end of the upper button runner 143 and the upper mold 120 to engage or disengage.

A feeding mechanism 14, mainly assembles a material selection gear 142 driven by a belt pulley 141 on the side of the bottom side outlet of a charging funnel 140. The concave teeth of the material selection gear 142 can entrain button assemblies, and the whole group of feeding mechanisms Located at the top of the above-mentioned flow channel 143, the button assembly can be directly conveyed and positioned through the bottom of the flow channel 143 corresponding to the axes of the upper and lower molds 120 and 100.

In the above structure, the upper mold protection device protrudes the ejector rod 122 from a wall surface of the quadrangular bucket 121 toward the upper button flow channel 143, so that when the flow channel 143 is positioned against the upper mold 120, The ejector rod 122 can just support the inner surface of the runner 143, providing a close limit control point; The mold 120 is positively moving downwards gradually, and when the bottom of the upper mold 120 wears the upper button, the inner surface of the flow channel 143 is pushed by the flapping block 132 acted by the cam 131 to move away from the outer direction. The upper mold 120 has a certain distance, and the upper mold 120 continues to move downward until it is molded with the lower mold 100. After riveting a button on the workpiece, it moves upward. During the upward movement, the flow channel 143 also gradually moves inward. Rely on, until the upper mold 120 rises to a certain height, the flow channel 143 reaches the abutting position almost at the same time.

But above-mentioned button riveting working machine of prior art, because its runner 143 leans against this patrix 120 quickly and directly, without any cushioning setting, the function of ejector pin 122 just can only provide positioning, so when upper die 120 When the length of the mold 120 is different, because the bottom end of the runner 143 is close to the upper mold 120, sometimes the bottom end of the runner 143 will touch the bottom end of the upper mold 120. In fact, the design of the runner 143 is to allow In contact with the upper mold, but under the situation that the abutting contact force of the runner 143 is unbuffered, the axis accuracy of the upper mold 120 is easily deviated due to the excessive force of the runner 143, so that the upper mold 120 Damaged by impact.

The purpose of the utility model is to provide an upper die protection device of a button riveting working machine.

The purpose of this utility model is achieved by providing a protective device for the upper die of a button riveting working machine, in which a push rod protruding horizontally toward the direction of the upper button flow channel is connected in the middle of the upper die, and the push rod Protruding outward from the upper mold, first passing through a longitudinally extending long hole on the wall of the four-corner bucket, the end of the ejector rod is provided with a bearing that can rotate in the up and down direction; a distance guide block is arranged on the above-mentioned upper button corresponding to the above-mentioned ejector rod On the inner surface of the flow channel, the distance guide block extends from top to bottom along an inclined step-shaped path on the surface facing the direction of the ejector rod. The upper section is provided with an elastic element supported on the top and will shrink into the distance guide block when it is under pressure. When the telescopic block in the lower section is retracted into the lower section of the space guide block, the top slope of the telescopic block just tends to the same slope with the slope of the middle section of the space guide block, so that the upward movement of the upper mold can be extended by the protrusion. The thickness of the telescopic block makes the upper button flow channel lean against the upper mold again under the control of the second stage, so as to avoid damage to the upper mold by directly relying on the upper mold.

The advantage of the device of the utility model is that it can effectively protect the upper die of the button riveting working machine and prolong the life of the working machine.

Below in conjunction with accompanying drawing, describe embodiment of the present utility model, wherein:

Fig. 1 is the combination schematic diagram of prior art working machine;

Fig. 2 is the partial operation schematic diagram of prior art working machine;

Fig. 3 is a three-dimensional combination schematic diagram of the protection device of the present invention;

Fig. 4 is a schematic diagram of the operation of the utility model;

Fig. 5 is a schematic diagram of the guide block assembly of the protection device of the present invention;

Fig. 6 is an exploded schematic view of the guide block of the present invention.

Please refer to Fig. 3, 4, 5, and 6, the upper mold protection device of the button riveting working machine of the present invention is connected with a top protruding horizontally in the direction of the upper button flow channel 21 in the middle section of the upper mold 20. Rod 200, the ejector rod 200 protrudes outward from the upper mold 20 and first passes through a longitudinally extending long hole 220 on the wall of the four-corner bucket 22, and the end of the ejector rod 200 is provided with a bearing 201 that can rotate in the up and down direction; a distance guide Block 23, corresponding to the above-mentioned push rod 200, is arranged on the inner surface of the upper button flow channel 21. The surface of the distance guide block 23 facing the direction of the push rod 200 is in the shape of an inclined step from top to bottom, and a coil spring elastic element is arranged in the center of the upper section. 230 is supported on the top, when it is subjected to a certain amount of pressure, it will shrink into the telescopic block 231 in the lower section of the space guide block 23 body, and the top slope of the telescopic block 231 will be just in line with the spacer when it is retracted in the lower section of the space guide block 23 body. The inclined surface of the middle section of the body of the distance guide block 23 tends to the same inclined plane, so that the upper mold 20 can move upward after being molded to the lower mold 24, and the bearing 201 end of the ejector rod 200 can be used to move along the surface of the protruding telescopic block 231 to make the upper mold 20 move upward. The button runner 21 leans against the upper die 20 again under the control of the second stage, avoiding directly relying on the upper die 20 to damage the upper die 20 .

In the above structure, the distance guide block 23 is provided with a guide groove 234 inside, and a longitudinal travel control elongated hole 232 is provided on one side wall, and the telescopic block 231 is provided with a coil spring elastic element 230 at the bottom end and penetrates the guide. In the slot 234, one side of the stroke control elongated hole 232 is connected with an outwardly protruding restricting rod 233. In normal conditions, the restricting rod 233 is just at the top of the stroke controlling elongated hole 232, and the telescopic block 231 Stretch out at the highest position, so that the surface of the telescopic block 231 facing the direction of the upper mold 20 can just form the above-mentioned step-shaped path with the surface of the lower section of the spacing guide block 23 .

In the above structure, the wall surface of the quadrangular bucket 22 is provided with a fixed positioning push rod 221 below the elongated hole 220 to control the upper button runner 21 to approach the limit point of the upper mold 20 .

When using the button riveting working machine of the present utility model to rivet buttons on a workpiece, when the flow channel 21 leans against the upper mold 20, before the positioning is not close, the protruding ejector rod 200 is first pressed by the bearing 201 It leans against the surface of the telescopic block 231 protruding from the distance guide block 23, so that the flow channel 21 quickly closes to the upper mold 20, and is buffered by the thickness of the telescopic block 231 first, so no matter whether the length of the upper mold 20 is slightly It is long and easy to touch the bottom of the runner 21, and the final abutment will be controlled extremely gently. In the case of effectively buffering the abutting force of the runner 21, the axis accuracy of the upper mold 20 will not be The possibility of the upper die 20 being damaged by the impact is obviously reduced due to the offset caused by the excessive force of the runner, which effectively overcomes the shortcomings of the prior art due to the imperfect design of the device.

Claims (3)

1. An upper die protection device for a button riveting machine, characterized in that a push rod protruding horizontally toward the direction of the upper button runner is connected to the middle of the upper die, and the push rod protrudes outward from the upper die , first pass through a longitudinally extending long hole on the wall of the four-corner bucket, and a bearing that can rotate in the up and down direction is provided at the end of the ejector rod; a distance guide block is arranged on the inner surface of the upper button flow channel corresponding to the above ejector rod, and the distance guide The surface of the block facing the direction of the push rod extends from top to bottom along an inclined step-shaped path. The upper section is provided with a telescopic block that is supported by an elastic element on the top and will shrink into the lower section of the spacing guide block when the pressure is applied. When entering the lower section of the spacing guide block, the top slope of the telescopic block just tends to the same slope as the middle section of the spacing guide block, so that the upper mold can move upward after being molded downward, and the thickness of the stretching block protruding outside makes the upper mold The button runner is controlled by the second stage and leans against the upper die again to avoid damage to the upper die by directly relying on the upper die. 2. The protection device for the upper mold of a button riveting working machine according to claim 1, characterized in that, the spacing guide block is provided with a guide groove inside, and a longitudinal stroke control elongated hole is provided on one side wall, and the telescopic block is A helical spring is installed in the guide groove at the bottom, and a restricting rod protruding outward is connected to one side of the long hole for stroke control. In normal conditions, the restricting rod is just located in the long hole for stroke control. On the top side, the telescopic block protrudes to the highest position, and the surface of the telescopic block facing the direction of the upper mold can just form the above-mentioned step-shaped path with the surface of the lower section of the spacing guide block. 3. The protection device for the upper mold of a button riveting working machine according to claim 1, characterized in that, the wall surface of the four-corner bucket is provided with a button below the elongated hole to control the flow path of the upper button to the limit of the upper mold. fixed top rod.

Images